Results 21 to 30 of about 11,034 (258)

Photon-counting detector CT: early clinical experience review

The British Journal of Radiology, 2023
Since its development in the 1970s, X-ray CT has emerged as a landmark diagnostic imaging modality of modern medicine. Technological advances have been crucial to the success of CT imaging, as they have increasingly enabled improvements in image quality and diagnostic value at increasing radiation dose efficiency.
Sartoretti, Thomas, Wildberger, Joachim E, Flohr, Thomas, Alkadhi, Hatem   +3 more
openaire   +2 more sources

Spectral X-Ray CT Image Reconstruction with a Combination of Energy-Integrating and Photon-Counting Detectors. [PDF]

PLoS ONE, 2016
The purpose of this paper is to develop an algorithm for hybrid spectral computed tomography (CT) which combines energy-integrating and photon-counting detectors.
Qingsong Yang, Wenxiang Cong, Yan Xi, Ge Wang   +3 more
doaj   +1 more source

An introduction to photon-counting detector CT (PCD CT) for radiologists

Japanese Journal of Radiology, 2022
AbstractThe basic performance of photon-counting detector computed tomography (PCD CT) is superior to conventional CT (energy-integrating detector CT: EID CT) because its spatial- and contrast resolution of soft tissues is higher, and artifacts are reduced.
Yuko Nakamura, Toru Higaki, Shota Kondo, Ikuo Kawashita, Isao Takahashi, Kazuo Awai   +5 more
openaire   +2 more sources

Evaluation of Coronary Plaques and Stents with Conventional and Photon-counting CT: Benefits of High-Resolution Photon-counting CT

Radiology: Cardiothoracic Imaging, 2021
To compare the performance of energy-integrating detector (EID) CT, photon-counting detector CT (PCCT), and high-resolution PCCT (HR-PCCT) for the visualization of coronary plaques and reduction of stent artifacts in a phantom model.An investigational scanner with EID and PCCT subsystems was used to image a coronary artery phantom containing ...
Jayasai R. Rajagopal, Faraz Farhadi, Taylor Richards, Moozhan Nikpanah, Pooyan Sahbaee, Sujata M. Shanbhag, W. Patricia Bandettini, Babak Saboury, Ashkan A. Malayeri, William F. Pritchard, Elizabeth C. Jones, Ehsan Samei, Marcus Y. Chen   +12 more
openaire   +3 more sources

Advanced Imaging of Shunt Valves in Cranial CT Scans with Photon-Counting Scanner

Tomography
This brief report aimed to show the utility of photon-counting technology alongside standard cranial imaging protocols for visualizing shunt valves in a patient’s cranial computed tomography scan.
Anna Klempka, Eduardo Ackermann, Stefanie Brehmer, Sven Clausen, Christoph Groden   +4 more
doaj   +1 more source

Ring-artifacts removal for photon-counting CT

Optics Express, 2020
Ring artifacts usually appear in photon counting computed tomography (PCCT) images, which may compromise image quality and cause non-uniformity bias. This study proposed a fast ring artifacts removal method by exploring the correlation from projections with different views for PCCT. This method has three advantages.
Kang An, Jue Wang, Rifeng Zhou, Fenglin Liu, Weiwen Wu   +4 more
openaire   +2 more sources

Photon-counting CT for forensic death investigations—a glance into the future of virtual autopsy

Frontiers in Radiology
This article explores the potential of photon-counting computed tomography (CT) in forensic medicine for a range of forensic applications. Photon-counting CT surpasses conventional CT in several key areas.
Dominic Gascho
doaj   +1 more source

Clinical applications of photon-counting CT in neuroimaging [PDF]

Zhenduanxue lilun yu shijian
Photon-counting computed tomography (PCCT) is a next-generation CT imaging technology that markedly improves image quality while reducing radiation dose and image noise through single-photon detection and energy discrimination by photon detectors.
LÜ Haiying, LU Yong, HE Naying
doaj   +1 more source

Calculation of Stopping-Power Ratio from Multiple CT Numbers Using Photon-Counting CT System: Two- and Three-Parameter-Fitting Method

Sensors, 2021
The two-parameter-fitting method (PFM) is commonly used to calculate the stopping-power ratio (SPR). This study proposes a new formalism: a three-PFM, which can be used in multiple spectral computed tomography (CT).
Sung Hyun Lee, Naoki Sunaguchi, Akie Nagao, Yoshiyuki Hirano, Hiroshi Sakurai, Yosuke Kano, Masami Torikoshi, Tatsuaki Kanai, Mutsumi Tashiro   +8 more
doaj   +1 more source

Comparison of ultrahigh and standard resolution photon-counting CT angiography of the femoral arteries in a continuously perfused in vitro model

European Radiology Experimental, 2023
Background With the emergence of photon-counting CT, ultrahigh-resolution (UHR) imaging can be performed without dose penalty. This study aims to directly compare the image quality of UHR and standard resolution (SR) scan mode in femoral artery ...
Philipp Gruschwitz, Viktor Hartung, Süleyman Ergün, Dominik Peter, Sven Lichthardt, Henner Huflage, Robin Hendel, Pauline Pannenbecker, Anne Marie Augustin, Andreas Steven Kunz, Philipp Feldle, Thorsten Alexander Bley, Jan-Peter Grunz   +12 more
doaj   +1 more source